Sports computer rankings guru Jeff Sagarin is 77 and still trying to perfect his system for evaluating college football teams ...

1. Fast and Slow Piles. This works well as a starting or closing activity. Students sort math fact cards into fast and slow piles. This visual way of tracking facts highlights which facts come ...

The dramatic shift is a warning sign—and scientists say the changes that aren't yet visible to the naked eye are just as ...

Here’s where things got really confusing. Going into Mingle, there were 72 players because two people were eliminated during ...

New analysis compares literacy vs. poverty rates for 10,000 districts, 42,000 schools and 3 million kids. Is your school a ...

A moving average can tell you what direction a stock's price is moving, without all the noise of the market. Read on to learn how to use this tool.